Absolute Power is a British comedy programme, set in the offices of Prentiss McCabe, a fictional public relations company (or 'government-media relations consultancy') in London, run by Charles Prentiss (Stephen Fry) and Martin McCabe (John Bird).

It started in 2000 on BBC Radio 4, lasting until 2004 with the fourth and final radio series. A six-part television series ran on BBC Two towards the end of 2003; the second six-episode television series ran on BBC Two on Thursdays at 10 pm from 21 July to 25 August 2005. A one-off radio episode was broadcast on 3 November 2006.

The title is taken from a quotation by the historian Lord Acton: "power tends to corrupt, and absolute power corrupts absolutely".

The programme was devised and written by Mark Tavener, and logically follows the programme In the Red, In the Balance, In the Chair, and In the End which he wrote with Peter Baynham. In some of these, Prentiss and McCabe (again played by Fry and Bird) are elevated members of the BBC, before getting kicked out. Indeed, there is a scene on the last page of the novel In the Red, in which the newly appointed director general of the BBC gives them the sack. The idea is that after this they created Prentiss McCabe, which is the subject of Absolute Power. The tone and style of Absolute Power is so different from the In the... series that it can be regarded as a totally different programme. It was produced, like so much of Tavener's work, by Dawn Ellis.

Prentiss is a man without morals, whose only objectives are money and power. He is portrayed as being the brains, while McCabe, though an excellent speech-writer, lacks his motivation and insight. McCabe's ambitions include retiring and drinking claret, and he spends his life in a state of cynicism, lack of energy and boredom. McCabe (who describes himself as "a first class mind") does sometimes have good ideas, but they usually become Prentiss's ideas by the time they are presented to the client, and he lacks the energy to make more than mild objections. McCabe is also more likely to baulk at a scheme for moral reasons than Prentiss.

Stephen Fry said of Charles Prentiss, "He's a brute of a man, out to win, with no morals; he's completely shameless. There's not much to say that's nice about him, except that there is some pleasure in watching a natural born killer at work and knowing whatever happens he will win".

Prentiss and McCabe often find themselves working on behalf of two rival clients, one of whom is often the shadier side of the Labour government, often called their "Downing Street Retainer". This is usually something of an inconvenience as Prentiss is met by Archie Hilditch (Tony Gardner, Alex Lowe), a faceless member of the government, in a deserted location (such as Frank Dobson's campaign headquarters), and told he needs to ruin the popularity of the organisation that he has spent half the programme building up. For example, in one episode they're employed by the government to increase the popularity of the European Union, while also being employed by the Eurosceptic newspaper The Sun to increase sales. It is probably a good thing in the end, as the firm relies on these payments since neither Prentiss nor McCabe seems to want to do any real work.

The third member of the company is Sandy (Siobhan Hayes), who is there as the office trainee, getting work experience for her NVQ level 2. She usually does all the work that the partners in the firm cannot be bothered to do, such as filling out thousands of public opinion polls in different handwritings, though she will only agree to do something if it can be twisted into one of the 'nine levels of competence' of her NVQ. Another member of the office is the useless Clive (Tom George) or as Martin calls him, 'young, er, thing', who often turns publicity stunts into bloodbaths. He first appears in series three, after Sandy leaves the company to become a nurse (although due to her fiddling with the accounts, she still gets paid).